生长素通过MAPK介导的超长链脂肪酸合成调控侧根发育

促分裂原活化蛋白激酶(MAPK)信号级联通路是真核生物中高度保守的重要信号系统，通过激酶逐级磷酸化传递并放大上游信号，进而调控细胞反应。MAPK信号通路不仅介导植物响应环境变化，而且在调节植物生长发育过程中发挥重要作用。近期，山东大学丁兆军课题组研究发现，植物重要激素生长素能够通过激活MPK14调控下游ERF13的磷酸...

Auxin Regulates the Lateral Root Development Through MAPK-mediated VLCFAs Biosynthesis

Mitogen-activated protein kinase (MAPK) cascade is an important and highly conserved cellular signal transduction pathway by delivery and amplification of upstream signals through protein kinase cascade phosphorylation in eukaryotes. In plants, MAPK signaling pathways not only mediate plant responses to environment, but also play crucial roles in regulating plant growth and development. A recent study from the Zhaojun Ding’s group of Shandong University uncovered a novel molecular mechanism of MPK14-mediated auxin signaling in lateral root development via ERF13- regulated very-long-chain fatty acids (VLCFAs) biosynthesis. This study reveals the molecular mechanism of the lateral root development from a new perspective, and further confirms the coupling between the vital phytohormone auxin and the ancient MAPKs module. Since lateral roots act as essential organs for plants in response to environment, deciphering the MAPK signaling pathway in regulation of lateral root development will provide a new strategy for how plants integrate development signals and environmental cues.